Door control mechanism



Aug. 29, 1933. H. H. MARSHALL DOOR CONTROL MECHANISM Filed Sept. 50, 1932 2 Sheets-Sheet 1 INVENTR rry 177 Marshall ATTORNEY DYa BY Aug. 29, 1933. H. H. MARSHALL DOOR CONTROL MECHANISM Filed Sept. 30 1932 2 Sheets-Sheet 2 INVENTOR flurry .ILjflarzsfidll BY V $6124.91

ATTORNEY Patented Aug. 29, 1933 noon CONTROL MECHANISM Harry H. Marshall; Detroit, Application September'30, 1932 i 1 Claim. (01. 3 3462) This invention relates to door control mech anism, and particularly to mechanisms for opening and closing garage doors.

The principal object of the present invention isto provide a new and improved door opening and closing mechanism to be applied to double and oppositely swinging doors foundon arages. r

Another object is to provide anew and im proved device whereby two doors may be opened and closed simultaneously by the manual operation of opei'atingcaoles, one operationunlocking. opening and locking open and another oper ation closing and securely locking the doors.

A further object of the present invention is to provide a locking device that will not only" hold the doors in a locked position, but one that provides a locking mechanism that cannot be picked from the outside.

Another object is to provide an adjustable feature for opening and-closing garage doors,

whereby the amount each door opensor closes may be varied to suit the requirement. e

'A still further object is to provide a newand improved device for openingand closing doors that does not necessitatethe operator going" into close or cramped quarters, the operating-cables may be placed in any convenient part of the garage building.

Another object of the present invention is to provide a door opening and closing mechanism that locks the doors inan open position, thereby doing away with the necessity of placing stops or sticks against thedoors to hold them in an open position while the operator drives the-car into the garage. 1 r J A further object 01f the present invention is to provide a new and improved door opening and closing device that is installed upon the cross-brace of the door frame so that the same is conveniently out of the way.

' The above and other objectsof'thepresent' Fig. 4 is a cross-section taken on the line ig-ZI 1 Fi s a os -secti n taken on he n 5+ f ig- 2; r I F g- 618 en ar ed v ew he k n .device looking in the direction of theiarrows: shown n Fi w th h do n a cl s P s t on Referring now to the drawings: I H The numeral designates a piece of angle iron which is suitably secured to the cross beam 65 of the door irame 11 (1 3%. 3). Suitably sec red to nd e ending at r t e rom i a 'plate 12. Thisplate or flange 12 extends inwardly" of the cross-beam oi the door frame, {and by means of the pivot screw 13., The lever l 14;

has its outer extremity curved as at 15. A pair of levers 16, 16 are spaced equi-distantand in parallelism to the plate 12. The levers are ful+ crumed on angle iron 10 bymeans of the pivot screws 17, 17'. Striker plates 18, 18' are formed o'nflthe' outer ends of the levers 16," 16, R ig idly secured'to the lever ld is a bar-'1,9. Pivotally secured to the bar 19 as at 20, andYpivotally secured to the lever 14 as at 21 is a link 22. Pivotally secured'tofthe lever 14 .as at. 23, and pivotally secured at its other extremity to the lever 16 as-at'24 is the link 25. p A pulley 26.,is rotatably mounted onpone end of arm 27,Jsaid arm 2'7 being ,rotatablymounted' at its other end on pinfzs to the curved portion 15 'of lever 14. Suitably .securedtol the outer extremity of arm 19 is an opening cable 29. Passed over pulley 26, and suitably secured to the arm 1,9'is theI closing cable "Cables 9 29 and 30 pass over the pulley '31. (Fig. 1) and terminate: as shownin Fig-3. Suitable handles 31, 31' are provided to provide a grip for the. operator. f Links .32 32' arepivotally secured, one end to, the levers 16, 16' by the pins33; 33"a nd the other endgto l nks o arai c az 34, :34" by the pins 3 5, 35"., 1 I The outer linkof the lazy tongs-34, ;34 fgare pivotally connected to the-swinging arms 36;" b mea s o the in 7. '1;- The sw n in m 3. a FW all se u e by the p n 38, 38 to the flanges 3'9, .39 (Fig. 2),. The outer extremity ,:of the -arms 36, 236' have formed thereon'turned .down flanges 1-40, -.40 (Figs.

' and 3). The vflanges are apertured to, re ceiyepneend of. the rods ll, eil one end of said] rods terminating in thefbrackets fl, f igiand are ld n r i P it on byim an of theme- 43 '(Fig. '5). The outer extremity of the rods 41, 41 pass. through the apertured' brackets 44,44 said brackets being rigidly secured to the doors as disclosed. Hooks 45, 45 are pivotally connected to the plates 44, 44' by means of the pins 46, 46'. Links 47, 4'7 connect the rods 41, 41' with the hooks 45, 45' said links being' pivotally connected to the end of the rods 41,

41' by means'of the pins 48, 48' and to the hooks 45, 45' by means of the pins 49,;49'. Numerals '5'0, 50' represent the conventional double doors cables and handles may be run to any convenient part of the garage building and the same eflicientresults will be obtained. This downward pull upon the handle 31 and cable 29 causes the arm 19, to which one end of the cable 29 is secured, to move to the position as shown in Fig. 2 of the drawings. This same force which is given to the cable 29 and arm 19 is also imparted to the link 22 which is pivotally connected to the arm 19 and lever 14 by means of the pivot pins 20, 21. When the' arm 19 is moved to the position shown in Fig. 2, the lever 14 moves on its fulcrum 13 and assumes the position as shown in Figi 2. Link 25 connects lever 14 with lever 16' and this link assumes the position shown in Fig. 2 when the cable 29 has been pulled; Links 32, 32 are pivotally connected to the levers 16, 16 at 33, 33 and the other end of said'links are pivotally connected to'one end of the lazy tongs at 35', 35. The outer extremity ofthe lazy tongs 34, 34' are pivotallyconnected to the arms 36, 36 at 37, 3'7. The arms .36, '36 are sildably mounted on the rods41, 41', said rods being secured to the upper portion of the doors 50, ".1 When the doors begin their outward movement the hooks 45,

45' are released from the striker plates 18,18 by means of the small. links 47, 47 which are pivotally connected to the extremities. of the rods 41, 41. When the lazy tongs 34, 34" start .ver 14 is 'moved simultaneously with arm 19 to open, theouter extremity of said tongs being connected to the arms'35, 36" and said arms being slidably mounted on the rods 41, 41,'the outer ends of the arms36, 36 areabu'tting the plates 44, 44 as the doors'swing outwardly'ithe links 47, 47. cause the hooks 45, 45 to open and allow the doors to swing outwardly. When the doors have been opened to their full extent the lazy tongs 34, 34 act as rigid braces and tend to hold the doors fully opened and in a locked position as-shown in Fig. 2' of. the drawings.

- 'When it is desired to close the doors the handle 31' is pulled downwardly and as said handle is connected to the cable 33, and'the cable 30 passes over the pulley 26, which pulley is attached to the lever 14, andthe cable terminates in the arm 19, this force not only causes the arm 19 to move back to the position shown in Fig. 1, but as the pulley through which the back to the Fig. 1 position. This force is also imparted to links 32, 32 and in turn .to the.

lazy tongs '3 4, 34', and as the outer extremities locking means from the outside.

the plates and are locked in place, as shown best in Fig. 6 of the drawings. I

If it is desired to have one door close before theother where doorso verlap or have a wooden flange,,this may be accomplished by setting the fulcrum of the lever 14at the desired point on g the plate 12. l

I have provided a door opening, closing and, locking .means'that will be cheap to manufacture and will bringthe device within a price range to suit the home owner. I have provided amechanism that cannot be picked from the outside because the locking means are back from the door crack and down from the top sufliciently to make it impossible to reach the 7 My device also overcomes the old necessity of getting back of the car if quarters are close, the device can be operated from any point in the garage.

There will not be needed bricks or sticks to hold the doors open in windy weather, nor will it be necessary to step outside of the garage to open looks .or release gravity holders or catches. The doors maybe opened or closed as quickly as the operator desires, which makes my device of great advantage for fire engine houses where successful in practical operation, it will .be

modifications may be resorted to without departing fromthe principles of the invention. 7

I claim;

Inadevice of. the class described including a pair of oppositely hinged doors, a strip of iron fastened above the doors, a plate fastened to said strip of iron and extending laterally therefrom, a lever piv otally mounted on said plate, a pair of levers pivotally mounted, in parallelism to the plate, on said strip of iron, links connecting the lever mounted on the plate and the levers mounted on the strip of iron, striker plates mounted on the ends of the levers mounted on the strip of iron, a pair oflazytongs, a pair of bars, the ends of which are pivotally mounted to the extremities of the strip of iron, links connecting the lazy-tongs with the levers mounted on the strip of iron, the other end of the lazy-tongs being pivotally mounted on theaforesaid bars, a' pair of rods held rigidly to the oppositely hinged doors, the outer. extremities of the lazy-tongs being pivotally connected to the bars, a'pair of locking hooks, links connecting the rods to said hooks, an arm connected rigidly to one of the levers attachedto the strip of iron, a pulley attached to one end of the lever attached to the plate, a pairof operating .cables secured to'the lever'at- .tached to the plate, and the arm attached to the lever, which is pivotally HARRY 7H. MARSHALL. 

